#include<stdio.h>

void main()
{
  int n, sum;
    printf("enter n: ");
    scanf("%d", &n);

    for(int i = 1; i < n;i++)
    {
       if(i % 2 == 0)
       {
           continue;
       }
       sum = sum + i;
    }

    printf("sum of odd numbers = %d", sum);
}